Dell Brocade 6520 Command Reference Supporting Fabric OS v7.1.0 - Page 1006

2 sshUtil sshUtil Manages public key authentication. SYNOPSIS sshutil allowuser user name sshutil showuser sshutil importpubkey sshutil showpubkeys sshutil delpubkeys sshutil genkey sshutil exportpubkey sshutil delprivkey sshutil delknownhost sshutil help DESCRIPTION NOTES Use this command to enable and manage SSH public key authentication on a switch. SSH public key authentication provides a mechanism for authenticating an authorized user without a password. SSH public key authentication is more secure than password authentication and can be used to securely access services that require automatic login. SSH public key authentication works as follows: An authorized user generates a pair of encryption keys (public and private) on a local machine (a switch or a server). Messages encrypted with the private key can only be decrypted by the public key, and vice versa. The private key remains on the local machine; the public key is exported to a remote host. The remote host responds to login requests by sending a brief message encrypted with the public key. The private key on the local host decrypts the message, and the login succeeds. Use the sshUtil command to do the following: • Configure a user to perform public key authentication and to manage keys on a switch. • Generate a private/public key pair on the local switch. • Import a public key for a specified user from a remote host to the local switch. • Export the public key from the local switch to a remote host. • Delete the public keys associated with a specified user or all users on the local switch. • Delete the private key on the local switch. • Delete the known host name or IP address from the file .ssh/known_hosts. The execution of this command is subject to Virtual Fabric or Admin Domain restrictions that may be in place. Refer to Chapter 1, "Using Fabric OS Commands" and Appendix A, "Command Availability" for details. Outgoing public key authentication from the switch to a remote host is restricted to Fabric OS Commands which use secure copy (SCP), such as configDownload or configUpload. 978 Fabric OS Command Reference 53-1002746-01